FB2026_02 , released June 18, 2026
Aberration: Dmel\Df(2L)hk18
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General Information
Symbol
Df(2L)hk18
Species
D. melanogaster
Name
Deficiency (2L) hook
FlyBase ID
FBab0001827
Feature type
chromosomal_deletion
Computed Breakpoints include

36E4-36E6;37B12-37B13

Features within 36E4--37B13
Sequence coordinates
Member of large scale dataset(s)
Nature of Aberration
Cytological Order
Progenitor
Mutagen
X ray
(Brittnacher and Ganetzky, 1983)
Class of aberration (relative to wild type)
chromosomal_deletion
(FlyBase, 2007)
Class of aberration (relative to progenitor)
chromosomal_deletion
(Stathakis et al., 1995, Whalen and Wilson, 1986, Gilbert et al., 1984, Brittnacher and Ganetzky, 1983)
Breakpoints

36E4-36E6;37B9-37B13

(Brittnacher and Ganetzky, 1983)

36E4-36E6;37B12-37C2

(Whalen and Wilson, 1986, Gilbert et al., 1984)

36E4-36E6;37B12-37C1

(Stathakis et al., 1995)
Causes alleles
Carries alleles
Transposon Insertions
Formalized genetic data

AcpC << bk1 << l(2)36Fb << Dox-A2 << bk2 << cub

Genetic mapping information
Comments

Breakpoint(s) molecularly mapped

(Gilbert et al., 1984, Hirsh and Davidson, 1981)

Proximal breakpoint between -52.15 and -50.55 kb (see deficiency map under l(2)37 for coordinates). proximal breakpoint between -53 and -51.4kb (Gilbert et al., 1984)

Comments on Cytology

Limits of break 1 from polytene analysis (FBrf0039473) Left limit of break 2 from polytene analysis (FBrf0040975) Right limit of break 2 from polytene analysis (FBrf0039473)

Sequence Crossreferences
DDBJ / EMBL / GenBank
DNA sequence
Protein sequence
Gene Deletion and Duplication Data
Genes Deleted / Disrupted
Genes NOT Deleted / Disrupted
Genes Duplicated
Complementation Data
Completely duplicated
Partially duplicated
Molecular Data
Completely duplicated
Partially duplicated
Genes NOT Duplicated
Complementation Data
 
Molecular Data
 
Affected Genes Inferred by Location (0)
    If no genes are listed here, it may be because the affected region is very large. The JBrowse insert above may show an error for the same reason, and other FlyBase tools such as CytoSearch may also fail for large regions. You can contact FlyBase for more help.
    In these cases, there will be no "Export to Hitlist" button to the left.
    Phenotypic Data
    In combination with other aberrations

    Df(2L)hk18/Df(2L)M36F-S5 lethal Df(2L)hk18/Df(2L)M36F-S6 lethal Df(2L)hk18/Df(2L)TW158 lethal Df(2L)hk18/Df(2L)TW130 lethal

    NOT in combination with other aberrations
    Stocks (1)
    Notes on Origin
    Discoverer
     

    Induced on: a In(2R)NS, In(2LR)SD72, SD-72 chromosome.

    (Brittnacher and Ganetzky, 1983)
    Balancer / Genotype Variants of the Aberration
     
    Separable Components
     
    Other Comments
     

    37B12-37C1 breakpoint is between position -52.2 and -50.6 on the Ddc map relative to the HpaI restriction site near the 3' end of Ddc.

    (Stathakis et al., 1995)
    Synonyms and Secondary IDs (4)
    Reported As
    Symbol Synonym
    Df(2L)hk18
    Df(2L)hk18
    (Pentz et al., 1986)
    hk18
    (Rizki et al., 1985)
    Name Synonyms
    Deficiency (2L) hook
    Secondary FlyBase IDs
      References (10)